Home / 28,091.75-38,766.62-15,517.31

Finding the Fourth Proportional to 28,091.75, 38,766.62 and 15,517.31

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Solution

The fourth proportional to 28,091.75, 38,766.62 and 15,517.31 is: 21,413.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.75 : 38,766.62 = 15,517.31 : x
  2. Step 2: Convert to fraction form
    28,091.75/38,766.62 = 15,517.31/x
  3. Step 3: Cross multiply
    28,091.75x = 38,766.62 × 15,517.31
  4. Step 4: Simplify right side
    28,091.75x = 601,553,660.19
  5. Step 5: Solve for x
    x = 601,553,660.19/28,091.75
  6. Step 6: Final answer
    x = 21,413.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.